Pollutant aerobic biological degradation breath measuring method and device

Abstract

The invention is a pollutant aerobic-biodegradation breathing measuring method and device, relating to a method and device for measuring oxygen utilization ratio in the course of processing waste water by aerobes. And the measuring method comprises the steps of: checking dissolved oxygen sensor, keeping temperature of water tank constant, putting in microbial mixed solution, blending, circulating mixed solution, setting parameters, putting in to-be-measured sample and calculating; and the measuring device comprises water tank, magnetic blending mechanism, aeration mechanism, aeration chamber, breathing chamber, measuring chamber, pH sensor, dissolved oxygen sensor, signal transmit lines, transducer terminal box, computer and oxygen utilization ratio measuring software. And the invention has advantages of less interference, high testing accuracy and frequency, high instrument automation degree, etc. and it is applied to the aspects of city sewage composition characterization, inlet water toxicity detection, evaluation and early- warning in sewage factory, process control and operation management in sewage factory, etc.

Description

technical field [0001] The present invention relates to a pollutant aerobic biodegradation respiration measurement method and device, specifically to measure the oxygen utilization rate (Oxygen Utility Rate, OUR) of pollutants in activated sludge microbial aerobic degradation sewage, which is suitable for urban sewage Sub-characterization, detection of toxic substances in sewage treatment plant influent, assessment and early warning of toxic effects, process control and operation management of urban sewage treatment plants, and laboratory research on process kinetics of activated sludge in sewage treatment, etc., belong to the field of sewage treatment technology. Background technique [0002] In the prior art, the usual respiration measurement methods and devices are mainly divided according to two criteria: (1) measuring the oxygen concentration in the liquid phase or the gas phase; (2) whether there is liquid or gas input and output (dynamic or static) . The principle of...

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Problems solved by technology

For example, the RA-1000 respiration measuring instrument developed by the Environmental Technology Department of Wageningen Agricultural University in the Netherlands, this respiration instrument uses the same sensor to measure the dissolved oxygen concentration of the inlet and outlet mixture by changing the flow direction, thus limiting the test frequency of OUR

[0007] In practical application, the above respiration measurement methods and devices all have defects such as low test accuracy and low test frequency.

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